Sentence #2 and #5 have pronouns in...
#2: me
#5: we
Pronouns are the words that substitute (or are placed instead of) a noun. For example; The pronoun "she" substitutes a female, the pronoun "he" substitutes a male, and the pronoun "they" substitute a group of people (two or more).
Examples for sentences that have the pronoun;
Me:
"Me! I'd love to help," I said when the teacher asked for someone to help her.
We:
I went to the Utah Park with my family yesterday. We had fun.